Metal-bending machine.



S. GROSSMAN. METAL BENDING MACHINE. APPLICATION man SEPT-2h 1916.

Patented Apr. 23, 1918.

3 SHEETS-SHEET I.

W ww www m S. GROSSMAN.

METAL BENDING MACHINE APPLICATION mm SEPT-21'. 19 s.

Patented. Apr. 23. 1918.

3 SHEETS-SHEET 2.

S. GROSSMAN.

METAL BENDING MACHINE. APPLICATION FILED SEPT-21.1916.

Patented Apr. 23, 1918.

3 SHEETS-SHEET 3.

the beginning of flange l) which couple 16 16 completes, and then the couple 17 17 forms the curved flange E. The three rolls 18, 19, and 20 are provided to guide the completed strip at the delivery end of the machine. The rolls forming couple 13 and 13 are-formecl respectively with enlarged Cell-- tral body portion 21, and the overlapping 1 tween the. amiular grooves 23 23 of the roll "14 and the enlarged portion 24 of the roll 14, and the initialbend of the flange D is to the edges B and B and are spacecl apart tween these side walls.

flanges 22, 22 to turn up the edges or flanges B B. The beads C and C. are formed beattained through the concave portion 25 of roll 15 and the convex, rounded edge 26 of the, roll 15.. To complete the vertical bend a or flange D, the rolls forming couple 16. 16 are formed-respectively with squared shoulder 27 and squaredflange 28, and finally the annular curved groove 29 of roll 17 co-actingwith the enlarged portion 30 of the roll 17 turns, the flange 1) to the curved flange E, and the rolls 18 19 20 conform to the shape of the completed strip and deliver it without, bending or warping.

In its course through the machine from I the receiving end to the delivery end, the

strip is guided, first as indicated in Figs. 3 and 5 by four rollers designated 31, 32 33,

34. 'The first. two rollers 31 and 32 are journaled in the frame and are disposed horizontally. These rollers are rooved to conform so the strip may pass, between them. The roller 33, is supported beneath the strip, and the upper roller 34 is adjustable so that pressure on the strip may be varied as desired. i Thisv roller 34' is journaled at the by turning the bolt the beam may be raised or lowered with relation to the bar, thus moving'and adjusting the roller 34 carried by the beam.

Between the second and third roll couples, a guide block 38 is located and between the third and fourth roll couples a second guide block 39 is utilized, both these blocks havstrip passes and by which the strip is guided to the next adjoining roll.-

ing rounded and smooth undersurfaces against which the upper face of the metal In conjunction with the roll couple "17-17 1 utilize the guide block 40. Each of these guide blocks are supported from the side walls of the machine frame at an altitude to hold the metal strip in proper horizontal position as it passes through'the 7 machine, and the block 40 also is provided with a forming core 41 co-acting with the V has a driving gear 64 driven by idler 65 roll 17 17'. This core is an integral bar projecting from the block and disposed longitudinally of the machine, and designed to co-act with the groove 29 of roll 17 and shoulder 30 of roll 17 as shown in Figs. 10 and 11 to turn the straight flange D into the curved flange E of the metal strip. This is accomplished as the straight flange passes alongside the bar or core 41 and the grooved roll 17 turns the flange over against the core as shown. A vertically disposed guide roller 42 is located in proper position to guide the flanged strip and hold it against wabbling as it encounters the core 41, and a guide block 43' located beneath the line of travel of sheet metal strip guides it, to the delivery rollers 18 19 20, whence it is delivered over the apron or table 44.

The roll couples are driven from the drive wheel 5 and drive shaft 12 through the 85 train of gears 45 46 and 4", the first gear being on the drive shaft 12 and the succeeding gears 46 and 47 on roller shafts or axles 48 and 49 respectively, which are journaled in the side walls of the frame.

The first three roll-couples are operated by gear-couples comprising respectively upper and lower gears 50 50", 51 51, and 52 52, an idler 53 being journaled on the bar 36 between gears 50 and :31, and a lower idler 54 being located between gears 51 and 52 to transmit motion to these couples. The first couple includes axles 55 55, the second couple shaft 12' and axle 56 and the third couple includes its axles 57 and 48; the 100 fourth couple shafts 49 and 58, and the fifth couple designated in Fig. 9 has shafts 59 and 59.

The fourth and fifth gear couples comprise respectively gears 60 60 and (31 G1 and in addition the shaft 59 has a gear 62 which meshes with the idler 63 (Fig. 2) which in turn meshes. with the gear 64 to revolve the delivery roll 20. The delivery roll 18 from the gear 61 of the couple 61-61. Through the above described gearing the roll couples are revolved in unison and the metal strip is carried from the receiving end of the machine to the delivery end out over the apron or table 44.

The upper members of the couples are each journaled in a pair of bearing blocks designated as 65 or 65 and these blocks are located in recesses or seats provided for them in the upper edges of the side walls of the machine, a piece of rubber, or other re- 'silient' member 66 being located in the bot tom of each seat below its block and the two series of blocks are held in position by the two side bars 3 and 3. In order to adjust the upper rolls to the lower rolls, and thus adjust .the roll members to the metal strip, 1 cmploy two series of set screws 67 67 provided with lock nuts 68 68 and passed through threaded perforations in the bars 3 and 3, In Fig. 7 specifically it will be seen that these bolts bear upon theupper surface ofeach of the blocks, and when the bolts are turned down the blocks are forced down against the resiliency of the rubber block 66. In this manner the bearing blocks may be adjusted individually and independently, but are all held collectively by the tWo side bars 3 and 3. 7

Oil holes 67 67 are provided in the side bars 3 3 and these holes convey oil to the grooves 68 in the sides of the bearing block from whence the oil may flow through duct 69 in'the side bearing walls of the frame to lubricate the bearings of the lower members of the roll couples. Other oil holes as 70 (Fig. 1) may lead directly to the bearings of the upper members of the couples.

in actual use I employ a housing for the machine, but in order to clearly illustrate the machine I have omitted the housing, The feed table, it Will be understood is as long as the machine in order'to accommodate the metal strips of various lengths and the strip (which may be fed from a coil if desired) is pushed under the guide block 11 until it is caught between the rolls of the first couple and then passes without further attention from the operator through the successive roll couples and is delivered, a com pleted article, at the delivery end of the machine. It will be understood that the 1nachine may be operated in positions other that that illustrated, as for instance the rolls may stand upon vertical axes. The roll couples may be adjusted to roll heavy or light metal, and the delivery rolls may be adjusted to straighten, bend or curve the strip as it is delivered from the machine. By the utilization of my machine I am enabled to increase the output, shorten the time of manufacture, and reduce the labor required, compared with hand made strips, thus reducing the cost of making these strips.

What I claim-is 1. A machine of the character described comprising, in combination, successive roll couples, whereof the first are adapted to bend the longitudinal edges of a flat strip at right angles, succeeding rolls adapted to roll said edges upon the strip, other succeeding rolls adapted and arranged to bend one edge portion of the thus formed strip with a right angle Wing, and further succeeding rolls adapted to laterally and inwardlycurve said wing.

2. A machine of the kind described, comprising a series of alined rotary roll couples having their Working faces formed to longitudinally receive a sheet'fed forward and between the same and to bend the longitudinal edges of thesheet, the firstroll couple being formed to bend the edges of the sheet at right angles thereto, the second roll couple being formed to roll said right angularlybent edges upon the sheet, succeeding pairs of roll couples being grooved to bend the thus formed sheet with a right angle Wing on one edge portion thereof, and other succeeding roll couples being formed to laterally and inwardly curve said wing, and

guide means for the sheet between said roll couples. a

3. A machine of the character described, comprising, in combination, successive roll couples, whereof the first are adapted to bend the longitudinal edges of a flatstrip at right angles, succeeding rolls adapted to roll said edges upon the strip, other succeeding rolls adapted and arranged to bend one edge portion of the thus formed strip with a right angle Wing, further succeeding rolls grooved .to laterally and inwardly curve said Wing, and a flat guide plate in the advanceof said last mentioned roll couple and having a rearWardly extending core projecting in the groove of the roll couple, said core being formed complementary with said groove.

In testimony whereof I aflix my signature in the presence of two witnesses.

SIMON GROSSMAN.

floplea of an patent may be obtained for five cents eaeinby addressing the Commissioner e1? Emerita,

Washington, D. 0. 

